Checking The Current Value - Mitsubishi Electric MELSEC Q Series User Manual

9.5

Checking the Current Value

In the QD73A1, two types of address are used to indicate position.
(1) Addresses to be used
The two types of address, "current feed value" and "actual current value", are stored to the monitor data area.
They can be monitored when necessary.
Item
Current feed value
Actual current value
(2) Precaution
When the value stored in "
update timing of the buffer memory area may be in error by 0.5ms.
• This is the value stored in "
Md.1
• The address established through OPR is the value of reference.
• The address can be changed through a current value change.
• This is the value stored in "
Md.2
• The actual servomotor movement amount calculated based on feedback pulses
is stored as an actual current value (the number of feedback pulses).
(Actual current value = Current feed value - Accumulated pulses in the deviation
counter)
Current feed value" or "
Md.1
CHAPTER 9 MAJOR POSITIONING CONTROL
Description
Current feed value".
Actual current value".
Actual current value" is used for control, the
Md.2
9
Update cycle
0.5ms
189